Abstract
AbstractThe Fe‐doped LiVPO4F/C cathode material was synthesized by a one‐step solid‐state reaction method. The effects of Fe doping content on the structure and electrochemical performance of LiVPO4F/C were investigated. X‐ray diffraction (XRD) analyses demonstrated that the appropriate addition of Fe3+ did not destroy the lattice structure of LiVPO4F/C. Scanning electron microscopy (SEM) showed that the surface of LiVPO4F/C is covered by a carbon film. The decreased grain size of the Fe‐doped LiVPO4F/C could shorten the ion transport path and thus improve the migration rate of lithium ions. X‐ray photoelectron spectroscopy (XPS) showed that the Fe ion exists in the Fe‐doped LiVPO4F/C as Fe3+ ion. At the discharge rate of 1 C, the initial discharge capacity and capacity retention rate of the LiV0.98Fe0.02PO4F/C after 500 cycles were 123.5 mAh/g and 88.6%, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
